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Diesel fell 2.5 cents to $3.949 a gallon, its second straight decline and the biggest single-week downturn in five months, the Department of Energy reported.
Gasoline, meanwhile, fell 5.2 cents to $3.495 a gallon, a 12-week low, DOE said Sept. 23 following its weekly survey of filling stations.
The diesel decline — the biggest since a 3.1-cent downturn April 29 — followed last week’s 0.7-cent dip. The price was $3.981 in each of the two weeks prior to that, the highest since April.
Diesel is 13.7 cents below the same week last year, while gasoline is 33.1 cents less than it was a year ago, DOE figures showed.
Despite the recent slides, trucking’s main fuel has held at or above $3.90 a gallon for the past six weeks.